States of Matte...

If $$K.E.$$ body is increased by $$100%$$. Then $$%$$ change $$'P'$$:

Vapour pressure of a pure liquid $$X$$ is $$2$$ atm at $$300$$K. It is lowered to $$1$$ atm on dissolving $$1$$g of $$Y$$ in $$20$$g of liquid $$X$$. If molar mass of $$X$$ is $$200$$, what is the molar mass of $$Y$$?

When $${ CO }_{ 2 }$$ under high pressure is released from a fire extinguisher, particles of solid $$C$$ despite the low sublimation temperature $$\left( -{ 77 }^{ 0 }C \right) $$ of $${ CO }_{ 2 }$$ at 1.0 atm. It is:

What is the total pressure exerted by the mixture of 7.0 g of $$N_2$$, 2g of hydrogen and 8.0 g of sulphur dioxide gases in a vessel of 6.1L capacity that has been kept in a reservoir at $$27^oC$$?

A $$4.40\ g$$ piece of solid $$CO_{2}$$ is allowed to sublime in a balloon. The final volume of the balloon is $$1.00L$$ at $$300K$$. What is the pressure of the gas?

$${N}_{2}+3{H}_{2}\rightleftharpoons 2{NH}_{3}$$. Starting with one mole of nitrogen and $$3$$ moles of hydrogen, at equilibrium $$50$$% of each had reacted. If the equilibrium pressure is $$P$$, the partial pressure of hydrogen at equilibrium would be:

Two liquids X and Y form an ideal solution.
The mixture has a vapour pressure of 400mm at 300K, when mixed in the molar ratio of 1:1 and a vapour pressure of 350mm when mixed in the molar ratio of 1:2 at the same temperature. The vapour pressures of the two pure liquids X and Y respectively are?

A volume $$V$$ of a gas at a temperature $$T_{1}$$ and a pressure $$p$$ is enclosed in a sphere. It is connected to another sphere of volume $$V/2$$ by a tube and stopcock is opened the temperature of the gas in the second sphere becomes $$T_{2}$$. The first sphere is maintained at a temperature $$Y_{1}$$. What is the final pressure $$p_{1}$$ within the apparatus?

A $$2.24 L$$ cylinder of oxygen at $$1atm$$ and $$273 K$$ is found to develop a leakage. When the leakage was plugged the pressure dropped to $$570 mm$$ of Hg. The number of moles of gas that escaped will be:

Equal weights of methane and hydrogen are mixed in an empty container at $${25}^{o}C$$. The fraction of the total pressure exerted by hydrogen is: